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Science - Chapter 2 Vocab
Plant Parts, Growth, and Reproduction
25
Science
4th Grade
10/24/2011

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Term
respiration
Definition
the process that happens when sugars break down and give off energy
Term
seed
Definition
an undeveloped plant with food stored, sealed in a protective covering
Term
epidermis
Definition
the protective outer layer of a leaf
Term
spore
Definition
in a seedless plant, the cell that can grow into a new plant
Term
photosynthesis
Definition
the food-making process of a plant
Term
chlorophyll
Definition
the green substance in plants that traps energy from sunlight
Term
fertilization
Definition
the joining of a female sex cell and male sex cell into a fertilized egg
Term
transpiration
Definition
the process plants use to get rid of extra water
Term
root hairs
Definition
threadlike cells in plants that take in water and minerals from soil
Term
stomata
Definition
tiny openings on a leaf that control how quickly a plant loses water
Term
ovary
Definition
the part of the plant that contains the egg cells
Term
germination
Definition
the process when a seed sprouts into a new plant
Term
pollination
Definition
the transfer of a pollen grain from the anther to a pistil
Term
things plants need to make own food
Definition
light, water, & carbon dioxide
Term
leaf
Definition
food-making part of plant
Term
seed coat
Definition
protective covering of seed
Term
seedling
Definition
a young plant
Term
anther
Definition
male part of plant that makes pollen
Term
pistil
Definition
female part of plant that holds the ovary
Term
veins
Definition
in plants, the bundles of tubes that carry food and water in stems and roots
Term
roots
Definition
absorb water, hold a plant in place, and store food
Term
taproot
Definition
a single, thick root
Term
fibrous roots
Definition
many root strands
Term
woody stems
Definition
stems that provide extra support for larger plants
Term
soft stems
Definition
stems that are soft, green, and bendable
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